涂膜厚度与沉积涂层的电阻（）。A、呈正比 B、呈反比 C、不呈比例的 D、无关系

Many years ago, when I was fresh out of school and working in Denver, I was driving to my parents’ home in Missouri for Christmas. I stopped at a gas station(加油站) about 50 miles from Oklahoma City, where I was planning to stop and visit a friend. While I was standing in line at the cash register(收款台), I said hello to an older couple（夫妇）who were also paying for gas.

I took off, but had gone only a few miles when black smoke poured from the back of my car, I stopped and wondered what I should do. A car pulled up behind me. It was the couple I had spoken to at the gas station. They said they would take me to my friend’s. We chatted on the way into the city, and when I got out of the car, the husband gave me his business card.

I wrote him and his wife a thank-you note for helping me. Soon afterward, I received a Christmas present from them. Their note that came with it said that helping me had made their holidays wonderful.

Years later, I drove to a meeting in a nearby town in the morning. In late afternoon I returned to my car and found that I’d left the lights on all day, and the battery（电池） was dead. Then I noticed that the Friendly Ford dealership - a shop selling cars - was right next door. I walked over and found two salesmen in the showroom.

"Just how friendly is Friendly Ford?" I asked and told them my trouble. They quickly drove a pickup truck (小货车) to my car and started it. They would accept no payment, so when I got home, I wrote them a note to say thanks. I received a letter back from one of the salesmen. No one had ever taken the time to write him and say thank you, and it meant a lot, he said.

"Thank you" - two powerful words. They’re easy to say and mean so much.

小题1: The writer planned to stop at Oklahoma City ______.

A．to visit a friend

B．to see his parents

C．to pay at the cash register

D．to have more gas for his car小题2:The words "took off" underlined in Paragraph 2 mean“______”．

A．turned off

B．moved off

C．put up

D．set up小题3:What happened when the writer found smoke coming out of his car?

A．He had it pulled back to the gas station.

B．The couple sent him a business card.

C．The couple offered to help him.

D．He called his friend for help.小题4:The battery of the writer’s car was dead because ______.

A．something went wrong with the lights

B．the meeting lasted a whole day

C．he forgot to turn off the lights

D．he drove too long a distance小题5:By telling his own stories, the writer tries to show ______.

A．how to write a thank-you letter

B．how to deal with（处理）car problems

C．the kind-heartedness of older people

D．the importance of expressing thanks

设计一个判断直线Ax+By+C=0与圆（x-x₀）²+ （y-y₀）²=r²的位置关系的算法。

腹腔间隔室综合征（abdominalcompartmentsyndrome，ACS）

该图所示意的地质构造或地貌景观中，主要由于内力作用形成的是（）

A、②④

B、②③

C、①③

D、①④

焦油加工的主要任务是获得酚、萘、蒽等纯产品和（）等粗产品。